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Restructuring (Tables)
 9 Months Ended
Apr. 30, 2014
Restructuring [Abstract]  
Schedule of restructuring-related costs
    Three Months Ended April 30,     Nine Months Ended April 30,
(In thousands)   2014   2013   2014   2013
General and Administrative                              
Severance   $ (676 )   $ 286     $ 4,096     $ 859
Relocation     268       13       350       520
Total general and administrative   $ (408 )   $ 299     $ 4,446     $ 1,379
Schedule of movements in severance accrual
(In thousands)    

Balance as of
July 31, 2013

      

Expense

      

Payments

      

Balance as of
April 30, 2014

  
Severance   $ 2,224     $ 4,096     $ 4,043     $ 2,277